my caravan isn’t lighting up tail lights, but all other lights work fine.
However… while testing, I got a strange sequence of events.
I’ll also point out that the 13 pin socket has the left and right tail lights on different pins, so whatever it is, is affecting both sides.
Ok.. with vehicle engine running and headlights on, my trailer lights work. Unplug the trailer, plug it back in, lights still work… unplug trailer and plug caravan in, lights on caravan don’t work. Unplug caravan, plug trailer back in, trailer lights now don’t work.
Turn engine off, back on, and trailer lights come back on….
This can be repeated a number of times.
The trailer plug is a 13pin plug, but with only the 7 pins needed for lights. Caravan is full 13 pin
Either the relay in the vehicle is faulty, or could there be a relay box in the caravan?
Trailer is just plug, wires and lamps.
I’m going to buy a new 13pin plug for caravan and replace that, and maybe get a tester unit. Quite cheap on Amazon, so see how it goes.